accidental vote

I feel awkward for being the one to make so many topics like these.

Twice recently, I accidentally down-voted images I like, one because I was clicking users who favorited the image and had my cursor a little too high. If I try to fix this by doing an up-vote, it tells me I can't do that because I already voted.

Is there any way to fix this kind of problem?

Honestly, I think you can just wait a day or two and vote on the image again because the tracking system is completely broken. Is that the kind of thing I should submit a trac ticket for?

I didn't know that, I'll try up-voting that one later.